支链醇对生物柴油低温性能的影响研究  

Study on Effect of Branched-chain Alcohol on Low-temperature Properties of Biodiesel

作　　者：孟中磊[1,2] 李翔宇[1,2] 蒋剑春[1,2] 

机构地区：[1]中国林业科学研究院林产化学工业研究所 [2]国家林业局林产化学工程重点开放性实验室,江苏南京210042

出　　处：《林产化学与工业》2008年第2期11-15,共5页Chemistry and Industry of Forest Products

基　　金：国家林业局948创新项目(2006-4-C05)

摘　　要：研究了用大豆油、甲醇和一种支链醇作为原料来制备含有脂肪酸支链醇酯的生物柴油,其中支链醇为异丙醇、异丁醇和仲丁醇中的一种。特别考察了反应时间、温度、催化剂和异丙醇与甲醇物质的量之比等因素对产物中脂肪酸异丙酯(IPE)含量的影响。用异丙醇和甲醇混合制备生物柴油,异丙酯的GC含量可达50%以上,但发现异丙酯的GC含量高于20%时,甘油不易分离。测定了IPE不同含量产物的黏度、冷凝点和冷滤点,发现其黏度比用纯甲酯制得的生物柴油略高,其冷凝点和冷滤点与之相比降低幅度可达5～8℃。Soybean oil, methanol and branched-chain alcohol were used to produce biodiesel which contains branched-chain esters. The branched-chain alcohol used is one of these alcohols ： isopropanol,isobutyl alcohol, sec-butyl alcohol. Isopropanol has the best reaction property among these alcohols. The effects of reaction time, temperature, catalyst dosage,isopropanol and metha- nol molar ratio on content of isopropyl esters （IPE） were researched. The GC content of IPE could be more than 50 % in this experiments. However, when IPE content was over 20 % , separation of glycerin from esters was difficult. The properties of the product with different IPE content were mensurated and its viscosity was higer than fatty acid methyl esters, while condensation point（CP） and cold filter plugging point （CFPP） were decreased from 5 to 8 ℃ compared with FME.

关 键 词：生物柴油 支链醇 黏度 冷凝点 冷滤点 

分 类 号：TQ51[化学工程]